Air-inlet device for manifolds



March 29, 1927. v 1,622,811 E. R. SCHATZ AIR INLET DEVICE FOR MANIFOLDS Filed June 5, 1925 ggf/q Patented Mar. 29,1927. i UNITED STATES- PATENT OFFICE.

)EIRNES'I` R. SCHATZ, OF RACINE, WISCONSIN.

AIR-INLET DEVICE FOR MANIFOLDS.

Application filed June 5, 1925. Serial No. 35,140.

This invention relates to air inlet devices wardly projecting arm 13 of an L-shapedy for manifolds. member, the vertical arm 14 of such member Objects of thisinvention are to provide being screwed into an upper threaded boss an attachment for intake manifolds for in- 15 of the tank 10. 60 ternal combustion engines which is so con- The member 14 is internally threaded at structed that it is adapted for supplying opposite ends and its lower end receives the heated air to the manifold in the exact provalve seat 16 which is screwed therein, and portion required for securing the most effecwhich cooperates with the valve 17. The tive mixture for the particular grade of fuel upper end of the member 14 receives the 65 used, and for the particular condition under adjusting plug 18 which is locked in place which the engine is operating. by means of the nut 19. The plug 18 and Further objects are to provide a device in the valve 17 are provided with inwardly which the normal supply for the engine projecting members which receive opposite under low speed may be manually regulated ends 0f the Compression spring 20, such com- 70 l5 to the exact demands of the engine, and in pression spring controlling the seating of which an auxiliary valve is adapted to open the valve. Obviously, from this construcand supply an additional amount of heated tion, the exact pressure exerted by the air for high engine speeds. spring 20 may be regulated by the plug 18.

An additional object of this invention is A small pipe 21 is connected by means of a 75 20 to provide an attachment which is so @0niitting 22 with a lower threaded boss 23 of structed that it may be positioned at any the tank 10. It is intended that the pipe 21 one of several different places with refershall extend to any heated portion of the ence to the intake manifold to thus adapt the engine, for example it may be Wrapped device to any make of car and will accommoaround or placed adjacent the exhaust mani` S0 25 date itself to the available space adjacent fold.

the intake manifold. A further adjustment is provided by means An embodiment of the invention is shown of the manually controlled valve 24 posiin the accompanying drawings, in which, tioned within the fitting 8, as illustrated in Figure 1 is a view of the attachment conthe figure and controlling direct communi- 85 nected to an intake manifold, and showing cation between the tank 10 and the inlet it partly in section to illustrate the construcmanifold 1. tion more fully. j It is to be noted that the pipe 22 projects Figure 2 is a fragmentary view of a porupwardly a distance below the lower end of tion of the exhaust pipe and the heating the tank 10 and thus providesaspace around 9o pipe. such pipe for settling of dust or other mate- In practising this invention the intake rial which may be drawn in through the manifold 1 is provided with a tapped hole pipe 21. within which the threaded end of a fitting If desired, the tank 10 may be positioned 2 is screwed. This fitting is al straight fitadjacent a heated portion of the engine. It 95 4o ting or nipple-like member .if it is applied is to be particularly noted that the constructo an engine which is not equipped with a tion of fittings 2 and 6 together with the vacuum tank, but if a vacuum tank is empipe 7 is such that the tank 1() may be rocked ployed, the fitting, as shown in the drawing, into any desired position, by suitably rotatis of T-shape. One arm 3 of the fitting reing the members. For example the fitting 6 100 ceives the small pipe 4 leading to the vacuum or elbow may be turned into a horizontal tank. ,The other arm 5 of the fitting reposition and the tank 10 adjusted with relaceives the threaded end of an L-shaped itytion to the pipe 7 to thus lower the tank. ting 6. This fitting receives one end of a Further, if it is found desirable the pipe 7 pipe 7 provided with a ri ht angle bend, may be rotated within the fitting 6 to thus 105 5o the other end of such pipe eing connected position the tank towards or away from the to a T-shaped pipe 8. The T-shaped pipe in engine. turn is screwed into a threaded boss 9 It will be seen, therefore, that a multitude formed in a small tank 10. An upwardly of adjustments of thetank 10 are provided extending arm 11 projects from the fitting by this construction allowing it to be posi- 110 8 and receives the angularly bent pipe 12 tioned at the most desirable place for the whose upper end is connected with the outparticular engine to which it is connected.

'become heated or else the varying conditions.

In operation, the valveQll is adjusted for the kmost e'liicient operation of the engine at low speeds. At higher speeds the valve 17 opens and an additional supply of air passes into the intake manifold. All of the air passing into the tank is heated prior `to passing into the manifold either by being heated Within the pipe 21 'or `Within the tank l0 or by both methods. For example, the tank l maybe located closely adjacent the engine or exhaust manifold so ythat it `Will pipe 2l may be Wrapped about the exhaust pipe Qllasashown 2. .Both yof. these expedients may be used if desired.

This device Will improve' the operation of the engine and may be adjusted to the exact conditions under "which 'it is to operate.

'lt is to `be noted that the tank 10 Vis relatively -l'arge'in comparison rto the vpipeQl and 'to the'deliye'ry pipes; thus Athe tank l0 'operates to smooth out pulsations in the suction and allows a more uniform yresponse under Further, the tank l() allows'the incoming heated -air to travel 'at a very much lower rate than to the pipeiQl and 'consequently allows the settling out of solid materials Which Imi'gght be Adrawn in through the pipe 21.

Although the invention has been described in considerable detail, it is to be understood that the 'invention may be variously embodied `and is, therefore, Lto be limited only as claimed.

I claim:

l. The combination of an intake manifold of an internal'combustion engine, of an air heating' Adevice comprising a tank, a pipe cading,` directly from said tank to said intake manifold, fa valve interposed between said tank and said intake manifold and adapted to be manually controlled, @a pipe connecting` said tank and said first mentioned pipe at a point ybetween said valve land said intake manifold, Ya spring urged Valve controlling communication from said tank to said manifold through said second 'mentioned pipe and a supply pipe opening into said tank.

2. A device for attachment to the intake manifold of .an 'internal combustion engine comprising` a tank 'having a delivery pipe extending; therefrom, Va manually controlled valve 'located within said pipe adjacent said tank, said tank having fa bypass connected 1" to said pipe outside of said valve, fa yieldingly urged valve vcontrolling the flow through said bypass anda pipe connected to Said tank and adapted to be positioned adjacent a heated portionofthe engine.

In testimony that I claim the foregoing l vhave hereunto set my hand at Racine, in the county of Racine and State of Wisconsin. 

